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label levels:

There is currently no available "Beginner" label. The following is the default level label: This "limit snap gage" was developed by the Greenfield Tap & Die Corporation (GTD) in Greenfield, Massachusetts. It was used in World War II (WWII) for testing the size of the diameter of a round or cylindrical surface. For example, a bullet is a cylinder, and this gage can test it to determine if its diameter is too large or two small. The term "tolerance" is the permissible deviation from the correct size. If the bullet is "out of tolerance," it is either too large or too small.


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Greenfield Tap and Die Corporation Limit snap gage with bullet

maker   Greenfield Tap and Die Corporation
date   c. 1940
location   Greenfield, Massachusetts
width   3.0"
height   2.0"
process/materials   steel
item type   Tools/Mechanical Tools & Equipment
accession #   #M.50

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See Also...

Go and No-Go Thread and Plug Gages made by Greenfield Tap and Die Corporation during WWII

Whitworth Hand Tap & Die set made by Greenfield Tap and Die Corporation during WWII

Greenfield Tap and Die Corporation's framed Memorial of WWII company losses

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